| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/20/19 | Prospectus filed pursuant to Rule 424(b)(5) | 
       
   | 
  39 | ||
| 03/18/19 | Automatic shelf registration statement of securities of well-known seasoned issuers | 
       
   | 
  24 | ||
| 03/15/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/15/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/15/19 | Annual report pursuant to Section 13 and 15(d) | 
       
   | 
  
                  | 
  93 | |
| 03/15/19 | Initial registration statement for securities to be offered to employees pursuant to employee benefit plans | 
       
   | 
  6 | ||
| 03/14/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/13/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/12/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | ||
| 03/12/19 | Statement of changes in beneficial ownership of securities | 
       
   | 
  1 | 

